The Ironhills leader is very committed , that would be a good clan to join.
As for strategy, my best advice is to group your troops in a tight formation right away. Don't let them overlap, though or else they will take more damage from ranged units. Never let your archers get too far away from the main army or an experienced player will pick them off.
Initially you should keep all your troops together, except the cavalry. Get good at controlling your main army as one group, while harassing with your cavalry.
For more advice search the forum for "Tactic" subthreads.